油井水泥膨胀降滤失剂F17C提高二连油田调整井固井质量  

Improving the cementing quality of readjust wells in Eriian Oilfield using a novel additive with expansion and fluid-loss-control action, F17C

作　　者：吴秀田[1] 阎睿昶[1] 姚晓[2] 兰祥辉[2] 

机构地区：[1]华北油田二连公司 [2]南京化工大学材料学院

出　　处：《钻井液与完井液》2001年第4期27-29,35,共4页Drilling Fluid & Completion Fluid

摘　　要：二连油田多压力层系低温浅井固井作业中的水窜问题是长期影响调整井固井质量的技术难题。在分析水窜成因的基础上,研制出了一种油井水泥膨胀降滤失双效剂(F17C)。室内评价结果表明:该材料使水泥浆在塑性状态和硬化早期均可产生有效膨胀,使水泥浆具有低滤失、高早强、零析水和过渡时间短的特性。在二连油田不同区块2口井的应用中,F17C水泥浆成功地解决了多年来该区域固井质量差的难题,经CBL及VDL测井解释,2口井固井质量均为优质。F17C一剂多效,适用温度范围广,现场施工方便,易于推广,为防止固井作业中的流体窜流、提高固井质量提供了新材料的支持。The channeling of formation fluid is a big problem for cementing shallow wells with multi-pressure system in Erlian Oilfield. A novel expansive water-loss-control agent, F17C was developed based on the analysisof reasons for fluid-migration in readjust wells. Results in lab showed F17C made the slurry some expansion both in plastic and set conditions, and the slurry has characteristics of low filtrate, high early strength, zero free water and short transit time. F17C was applied in two different blocks in Erlian Oilfield, and tests with help of CBL and VDL indicate that the cementing quality is excellent. It proved to be a successful material for improving the cementing quality in channeling easy wells in these areas.

关 键 词：油井水泥 膨胀 降滤失剂 防窜 调整井 固井质量 

分 类 号：TE256[石油与天然气工程—油气井工程] TE26